package com.xulu.romance.aspect;

import com.auth0.jwt.JWT;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.xulu.romance.pojo.UserLog;
import com.xulu.romance.service.UserLogService;
import com.xulu.romance.utils.GetLocationUtil;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Method;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Arrays;
import java.util.Date;

@Aspect
@Component
@Slf4j
public class UserLoginAspect {

    @Autowired
    private UserLogService userLogService;




    @Around("@annotation(com.xulu.romance.annotation.UserLoginLog)")
    public Object logUserLogin(ProceedingJoinPoint joinPoint) throws Throwable {
        //通过工具类获取Request对象
        RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
        ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) requestAttributes;
        HttpServletRequest request = null;
        if (servletRequestAttributes != null) {
            request = servletRequestAttributes.getRequest();
        }

        String token = null;
        if (request != null) {
            token = request.getHeader("token");
            System.out.println(token);
        }
        String userId=null;
        String userName=null;
        //获取用户id和用户名
        if (StringUtils.isNotBlank(token)){
            userId = JWT.decode(token).getAudience().get(0);
            userName = JWT.decode(token).getAudience().get(1);
        }

        //获取登录时间
        Date loginTime = new Date();
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();
        //获取请求方法
        String loginMethod = method.getName();


        //获取登录URI
        String url = request.getRequestURI().toString();
        // 获取请求方式
        String requestMethod = request.getMethod();
        // 获取登录IP地址
        String ipAddress = getIpAddress(request);
        // 获取登录设备信息
        String deviceInfo = request.getHeader("User-Agent");
        //获取登录位置
        String location = null;
        if (!ipAddress.startsWith("192.168")){
            GetLocationUtil.getLocation(ipAddress);
        }else {
            location="localhost";

        }



        UserLog userLog=new UserLog();
        if (userId != null) {
            userLog.setUserId(Integer.valueOf(userId));
        }
        userLog.setUserName(userName);
        userLog.setLoginTime(loginTime);
        userLog.setIpAddress(ipAddress);
        userLog.setDeviceInfo(deviceInfo);
        userLog.setUri(url);
        userLog.setRequestMethod(requestMethod);
        userLog.setLoginMethod(loginMethod);
        userLog.setLocation(location);
        userLogService.save(userLog);
        return joinPoint.proceed();
    }

    /**
     * 获取用户真实IP地址，不使用request.getRemoteAddr();的原因是有可能用户使用了代理软件方式避免真实IP地址。
     * 可是，如果通过了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP值，究竟哪个才是真正的用户端的真实IP呢？
     * 答案是取X-Forwarded-For中第一个非unknown的有效IP字符串
     * @param request
     * @return
     */
    private static String getIpAddress(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_CLIENT_IP");
        }
        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (ip == null || ip.isEmpty() || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
            if("127.0.0.1".equals(ip)||"0:0:0:0:0:0:0:1".equals(ip)){
                //根据网卡取本机配置的IP
                InetAddress inet=null;
                try {
                    inet = InetAddress.getLocalHost();
                } catch (UnknownHostException e) {
                    e.printStackTrace();
                }
                ip= inet.getHostAddress();
            }
        }
        return ip;
    }
}
